I prefer difficult. I usually one-shot everything, so I need a challenge.

Unfortunately Challenge Mode in B2W2 was handled poorly. It's not available from the start, so you can't play through the game with it. Also, it doesn't give any bigger reward for completing the game that way, which IMO is the whole reason why I would play a higher difficulty.

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Omega Ruby & Alpha Sapphire, the day Pokémon pulled a Dallas and jumped the shark.